<template lang="pug">
  shelf-dialog(
    :title="title"
    ref="dialog"
  )
    .dialog-list-wrapper(v-if="!ifNewGroup")
      .dialog-list-item(
        :class="{ 'is-add': item.edit ? item.edit === 1 : false }"
        v-for="(item, index) in categoryList"
        :key="index"
        @click="onGroupClick(item)"
        v-if="(item.edit === 2 && isInGroup()) || item.edit !== 2 || !item.edit"
      )
        .dialog-list-item-text {{ item.title }}
        .dialog-list-icon-wrapper(v-if="shelfCategory.id === item.id && isInGroup()")
          span.icon-check
    .dialog-new-group-wrapper(v-else)
      .dialog-input-title-wrapper
        span.dialog-input-title {{ $t('shelf.groupName') }}
      .dialog-input-wrapper
        .dialog-input-inner-wrapper
          input.dialog-input(
            type="text"
            v-model="newGroupName"
            ref="dialogInput"
          )
          .dialog-input-clear-wrapper(
            @click="clear"
            v-show="newGroupName.length > 0"
          )
            span.icon-close-circle-fill
    template(#btn)
      .group-dialog-btn-wrapper
        .dialog-btn(@click="hide") {{ $t("shelf.cancel") }}
        .dialog-btn(
          @click="createNewGroup"
          :class="{ 'is-empty': newGroupName.length === 0 }"
          v-if="ifNewGroup"
        ) {{ $t("shelf.confirm") }}
</template>

<script>
import ShelfDialog from '@/components/common/Dialog'
import { storeShelfMixin } from '@/utils/mixin'
import { removeAddFromShelf, appendAddToShelf, computeId } from '@/utils/store'
import { saveBookShelf } from '@/utils/localStorage'

export default {
  name: 'ShelfGroupDialog',
  mixins: [storeShelfMixin],
  components: { ShelfDialog },
  props: {
    showNewGroup: { type: Boolean, default: false },
    groupName: { type: String }
  },
  computed: {
    defaultCategory() {
      return [
        {
          title: this.$t('shelf.newGroup'),
          edit: 1
        },
        {
          title: this.$t('shelf.groupOut'),
          edit: 2
        }
      ]
    },
    category() {
      return this.shelfList.filter(item => item.type === 2)
    },
    categoryList() {
      return [...this.defaultCategory, ...this.category]
    },
    title() {
      return !this.ifNewGroup ? this.$t('shelf.moveBook') : this.$t('shelf.newGroup')
    }
  },
  data() {
    return {
      ifNewGroup: false,
      newGroupName: ''
    }
  },
  methods: {
    isInGroup() {
      return this.currentType === 2
    },
    show() {
      if (this.showNewGroup) {
        this.ifNewGroup = this.showNewGroup
        this.newGroupName = this.groupName
      }
      this.$refs.dialog.show()
    },
    hide() {
      this.$refs.dialog.hide()
      setTimeout(() => {
        this.ifNewGroup = false
      }, 200)
    },

    onGroupClick(item) {
      if (item.edit && item.edit === 1) {
        this.ifNewGroup = true
      } else if (item.edit && item.edit === 2) {
        this.moveOutFromGroup(item)
      } else {
        this.moveToGroup(item)
      }
    },
    clear() {
      this.newGroupName = ''
    },
    moveToGroup(group) {
      this.setShelfList(
        this.shelfList.filter(book => {
          if (book.itemList) {
            book.itemList = book.itemList.filter(subBook => {
              return this.shelfSelected.indexOf(subBook) < 0
            })
          }
          return this.shelfSelected.indexOf(book) < 0
        })
      ).then(() => {
        if (group && group.itemList) {
          group.itemList = [...group.itemList, ...this.shelfSelected]
        }
        group.itemList.forEach((item, index) => {
          item.id = index + 1
        })
        this.simpleToast(this.$t('shelf.moveBookInSuccess').replace('$1', group.title))
        this.onComplete()
      })
    },
    moveOutFromGroup(item) {
      this.moveOutOfGroup(() => {
        this.onComplete()
      })
    },
    createNewGroup() {
      if (!this.newGroupName && this.newGroupName.length === 0) {
        return
      }
      if (this.showNewGroup) {
        this.shelfCategory.title = this.newGroupName
        this.onComplete()
      } else {
        const group = {
          id: this.shelfList[this.shelfList.length - 2].id + 1,
          itemList: [],
          selected: false,
          title: this.newGroupName,
          type: 2
        }
        let list = removeAddFromShelf(this.shelfList)
        list.push(group)
        list = appendAddToShelf(list)
        computeId(list)
        this.setShelfList(list).then(() => {
          this.moveToGroup(group)
        })
      }
    },
    onComplete() {
      saveBookShelf(this.shelfList)
      this.hide()
      this.setIsEditMode(false)
    }
  }
}
</script>

<style lang="scss" scoped>
@import '~@/assets/styles/global';
.dialog-list-wrapper {
  width: 100%;
  padding: 0 px2rem(20);
  box-sizing: border-box;
  font-size: px2rem(14);
  @include scroll;
  .dialog-list-item {
    display: flex;
    padding: px2rem(15) 0;
    box-sizing: border-box;
    color: #666;
    &.is-add {
      color: $color-blue;
      &:active {
        color: $color-blue-transparent;
      }
    }
    &:active {
      color: rgba(102, 102, 102, 0.5);
    }
    .dialog-list-item-text {
      flex: 1;
    }
    .dialog-list-icon-wrapper {
      flex: 0 0 px2rem(30);
      color: $color-blue;
      @include right;
    }
  }
}

.dialog-new-group-wrapper {
  width: 100%;
  padding: 0 px2rem(20);
  box-sizing: border-box;
  .dialog-input-title-wrapper {
    font-size: px2rem(10);
    margin-top: px2rem(20);
  }
  .dialog-input-wrapper {
    width: 100%;
    padding: 0 0 px2rem(30) 0;
    box-sizing: border-box;
    .dialog-input-inner-wrapper {
      display: flex;
      width: 100%;
      padding: px2rem(10) 0;
      box-sizing: border-box;
      border-bottom: px2rem(1) solid #eee;
      font-size: px2rem(14);
      color: #666;
      .dialog-input {
        flex: 1;
        border: none;
        &:focus {
          outline: none;
        }
      }
      .dialog-input-clear-wrapper {
        flex: 0 0 px2rem(30);
        color: #ccc;
        @include center;
        &:active {
          color: #999;
        }
      }
    }
  }
}

.group-dialog-btn-wrapper {
  width: 100%;
  @include center;
}
.dialog-btn {
  flex: 1;
  &.is-empty {
    color: rgba(255, 255, 255, 0.5);
  }
  &:active {
    color: rgba(255, 255, 255, 0.5);
  }
}
</style>
